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Formula & Calculator

Pulse Pressure

The gap between your systolic and diastolic blood pressure numbers, a simple indicator of artery health.

Written by the Vorzep Team

BiologyHealthClinical

Pulse Pressure CalculatorPP = SBP − DBP

PP = SBP − DBP
SBP = systolic  ·  DBP = diastolic (mmHg)
⟹ PP⟷SBP, DBP
mmHg
mmHg
mmHg
Common:
Solve for:
Pulse Pressure—
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PP Category—
Low (<40) Normal (40–60) High (60–80) Very High (>80)
PP vs. SBPfixed DBP
PP(SBP) for fixed DBP Computed point
PP = SBP − DBP  ·  normal: 40–60 mmHg

Variables

SymbolQuantityUnit
PPPulse pressuremmHg
SBPSystolic blood pressuremmHg
DBPDiastolic blood pressuremmHg

What it means

Pulse pressure (PP) is the difference between systolic and diastolic blood pressure. It reflects the force generated by the left ventricle and the compliance of the arterial tree. A widened PP (>60 mmHg) is associated with increased arterial stiffness, often seen in ageing, hypertension, and atherosclerosis. It is an independent predictor of cardiovascular events. It is used in hypertension management and in cardiovascular risk stratification. Understanding pulse pressure helps clinicians assess vascular health and guide treatment decisions.

Worked example

Pulse Pressure – Two Detailed Examples

Real‑World
Scenario: A patient has blood pressure of 120/80 mmHg. The doctor calculates the pulse pressure (PP) as the difference between systolic and diastolic pressures. PP is an indicator of arterial stiffness. A normal PP is around 40 mmHg. The doctor uses this to assess cardiovascular risk.
ParameterValue
SBP (mmHg)120
DBP (mmHg)80
1PP = 120 − 80 = 40 mmHg
Result 40 mmHg ✓ Normal pulse pressure
Scenario: An elderly patient has a blood pressure of 160/100 mmHg. The physician notes a pulse pressure of 60 mmHg, which is elevated and suggests increased arterial stiffness. This finding may indicate underlying cardiovascular disease and the need for further evaluation and management.
ParameterValue
SBP160
DBP100
1PP = 160 − 100 = 60 mmHg
Result 60 mmHg ✓ Elevated pulse pressure
Insight: Pulse pressure is the difference between systolic and diastolic pressures. It reflects the force of cardiac contraction and arterial compliance. A widened PP is associated with increased cardiovascular risk.

Common mistakes

  • Pulse pressure: PP = SBP − DBP – the difference between systolic and diastolic pressures.
  • Normal PP: About 40 mmHg – wider PP indicates arterial stiffness (e.g., in older adults).
  • Units: Both in mmHg.
  • Interpretation: A narrow PP (e.g., <25) may indicate low cardiac output or shock.
  • Measurement: Use properly calibrated sphygmomanometer.

Applications

Pulse pressure (PP) is the difference between systolic and diastolic blood pressure, reflecting the stroke volume and arterial stiffness. It is a predictor of cardiovascular risk, especially in older adults. Clinicians use PP to assess vascular health, to guide hypertension treatment, and to monitor fluid status. A widened PP (e.g., >60 mmHg) may indicate aortic regurgitation or arterial stiffness, while narrow PP may suggest poor cardiac output. By calculating PP, healthcare providers can gain insights into cardiovascular function. This simple calculation is part of routine blood pressure assessment and can help in risk stratification.

  • Assessment of cardiovascular risk and vascular stiffness
  • Hypertension management and medication titration
  • Fluid status and haemodynamic monitoring
  • Cardiac output estimation in clinical settings
  • Research on ageing and cardiovascular disease